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APPARATUS FOR AUTOMATICALLY DISPLAYING PICTURES.

No. 507,785. Patented Oct. 31,1893.

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G. 000K & O. K. MARE. APPARATUS'FOR AUTOMATICALLY DISPLAYING PIGTURES.

No. 507,785. v Patented Oct. 31, 1893.

7 Mr)? eyu' UNITED. STATES PATENT OFFICE.

GEORGE COOK, OF LONDON, ENGLAND, AND CHARLES KERR MARR, OF

GLASGOW, SCOTLAND.

APPARATUS FOR AUTOMATICALLY DISPLAYING PICTURES.

SPECIFICATION forming part of Letters Patent No. 507,785, dated October 31, 1893.

Application filed March 20, 1893. Serial No. 466,846. (No model.) Patented in England December 30, 1892. No. 24,053.

To all whom it may concern:

Be it known that we, GEORGE COOK, clockmaker, of 58 Spencer Street, Clerkenwell, in the city of London, England, and CHARLES KERR MARR, gentleman, of 2 Sutherland Terrace, Hillhead, in the city of Glasgow, Scotland, subjects of the Queen of Great Britain and Ireland, have jointly invented new and useful Improvements in Apparatus for Automatically Displaying Advertisements, Pictures, and the Like, (which have been patented in Great Britain by Letters Patent dated December 30, 1892, No. 24,053 and we do hereby declare that the following is a full, clear, and exact description of the invention, which Will enable others skilled in the art or manufacture to which it relates to make and use the same.

This invention relates to that class of automatically acting advertising machines wherein a series of rectangular or other shaped drums or cylinders are used to display advertisements, pictures and the like, the said drums or cylinders being periodically partially rotated through theinstrumentality of clockwork mechanism in order to expose to view a number of different advertisements in the same space and the present invention has for its object the provision of electrical means for rotating the cylinders or drums in conjunction with a clock and by which means any desired number of cylinders or drums may be rotated or partially rotated.

.The invention is illustrated on the accompanying drawings.

Figure 1 is a front elevation of the improved advertising apparatus; Fig. 2 a rear elevation with the back of the casin g removed. Fig. 2 is a detail view of the circuit make and break device, Fig. 3 being a front and Fig. 3 a detail side and sectional View of the pawl for turningv the drum; Fig. 4. a side elevation of details of the electrical mechanism, while Figs. 5, 5, 6 and 7 are views of a device which is attached to the clock for regulating the time during which the apparatus is to be kept in operation. Fig. 5 shows the two disks detached.

As shown bythe drawings the improved apparatus consists of a lever A which is centered at its rear end on a bracket arm A the forward end of the lever being formed with a curved cross arm A which moves through an arc in proximity to the soft iron cores 6 of electro magnets B the cores b being cut away to correspond to the arc of movement of the lever.

Each lever A has fixed to its curved cross arm an iron or steel plate C and in order to obtain the greatest effective inductive power of the electro magnets B on the lever the plate at its upper part has over the top of each core I a horizontal projection c overlapping but in its lowest position clear of the top ends of the cores. The coils of the electro magnets B are 6 connected by wires with the battery and in the circuit a clock D is placed. The clock has a contact making cam d the spindle of which is geared to any suitable wheel. In conjunction with the cam d a series of spring blades E is provided the number of them corresponding to the number of drums or cylinders in the apparatus each blade being connected by a wire w to its individual drum. The positive wire from the battery is connected to a plate d carrying a series of pins e the number of which corresponds to the number of spring blades E and the cam 61 in its rotation successively makes contact of each blade with its pin a by pressing the lower end of the blade laterally against its pin. The circuit being then complete during the short interval of connection between pin e and spring blade E the drum or cylinderis caused to be partially rotated. In connection with the curved cross arm A of each lever A a plate spring Fis provided the free end of the said spring bearing on the cross arm A of the lever A and when contact has been made as described by the camd the electro magnet B 0 for each lever A by induction draws down the lever against the resistance of the spring F the projection c of the lever being kept from actual contact with the core I? by a buffer f and remaining down until contact is broken 5 by the release of its spring blade E when the spring F returns it to the'position shown at the top of Fig. 3. The leverAhas hinged to it a spring pawl a which projects beyond it and extends over the face of an escapement Ico plate or disk G the contour of which is so shaped as to periodically stop the rotation of the drum or roller and display each advertisement or the like upon it in succession.

Each cylinder or drum H has an cscapement plate Gsecured on its spindle g and the facets of the plate G are curved on their edges to correspond to the cross arm A of the lever A against which the said facets bear in succession to lock the cylinder or drum II in position after each partial rotation. Each facet of the plate G is provided on one side with a pair of projecting pins g, g and when the lever A is being drawn downward as before described the spring pawl a is pressed outward until it has passed over the uppermost pin g it having an inclined face 9 Fig. 3 when it again springs inward between the pair of pins as shown at the lower part of Fig. 3. By reason of the spring 9 on the lever A being returned by the spring F to its uppermost or normal position the spring pawl a acting on the under side of the top pin g of a pair causes the plate G and with it the cylinder or drum H to be turned to an extent corresponding to one facet of the plate. V

Thedr'ums H are shown with four sides but they may have any number of sides the mechanism being modified to suit.

In order that the period during which the machine shall remain automatically 'in operation may be rendered adjustable the apparatus illustrated by Figs. 5, 6 and 7 is conjoined with the clock D and the said apparatus consists of an adjustablecam driven by the clock in the direction of the arrow. The'cam is composed of two similar pieces J, J loosely centered on a spindle 713 but made to turn withfit by 'a pin l. The spindle 'is geared to make one complete revolution in twenty four hours and the pin l is fixed in the piece J and projects into one of a series of twenty four corresponding holes in a disk m fast on the spindle k.

The piece J has index numerals m'a'rked'on it whereby the number of hours during which the cam is adjusted to make contact can be seen. To makec'ontact the cam acts on a spring blade 'It in the circuit and presses it against a screw r in a terminal 0". The major orco'ntact making part of the cam as shown by Fig. 5 is equal to one third of "the circumference or the equivalent of eight hours but byturning the piece J round a distance equal 'to one twenty fourth of the circumference the duration of contact will be increased by one hourand so on. As represented by the drawing "the duration of contact would be eleven hours. Toadjust the cam the hands of the clock are turned to the hour at which it is desired that the apparatusshall start. cam and "with it the 'pin'l is then drawn out ofgea'rwith the disk on and the part J of the'cam is turned round in the opposite direction to the point of the arrow until the the number indicative of the desired numberof hours the machine is to be maintained in operation is exposed at the edge of the wider portion of the part J. The cam as adjusted is then turned round in the direction The of the arrow until the major portion of the part J just puts the blade 07. into contact with the screw 0". The pin lwill then be opposite a hole in the disk m into which it is pressed by the action of a spring 3 which in withdrawing the pin was previously compressed between the thumb nut and a pin 1 fixed in the spindle 7c. The spring .9 presses upon the thumb nut and this pressure is exerted through the disk J upon the disk J tending constantly to force its pin l into one of the openings in the disk m. The hands of the clock are now turned backward to indicate the correct time and the clock put in motion.

Having thus described our invention, what we claim, and desire tosecure by Letters Patent, is

1. In combination, the drum, the magnet and armature with means operated thereby 'for turning the drum, the seriesofradiating spring contact blades E, the rotary contact maker cl, with clock work for operatin g the same, the pins e against which the spring blades are pressed andthe electrical connections, substantially as described.

2. Incombination, the drum, the disk *Gon the drumshaft having the pins and the curved facets, the magnet, the pivoted armature leverhaving a curvedend conforming to the facets of the disk and adapted to lock the same and the pawl carried by the armature lever to engage the pins on the disk for turning the same, substantially as described.

3. In combination, the displaydrums, the magnet and armature with means operated thereby for moving "the drums step by step, the electrical connections with a contact breaker cl and the adj ustablecontact breaker to determinethe duration of the action of the device comprising the two adjustabledisks placed side bysi'de ona'spindl'e lo and having contact surfaces extending partially about their peripheries, the means for holding the disks in their adjusted positions including the perforated plate and pinl, and the contact 11 arranged to bear on'the contact surface of the disks, substantially asdescribed.

In witness whereof I have hereunto set my hand and seal this 10th day of January, 1893.

GEORGE COOK. [L. s.] Witnesses:

THOMAS BEST, rlfanager to the said George Cook, 58 Spencer 86., 'Olerlcemuell, London. LEONARD W ELLMAN. Cloclcmalc'er, 58 "Spencer Street, Olerlcemvell,

London.

In witness whereof I have hereuntoset my handand seal this 7thday of January, 1893.

CHARLES KERR MARE. [L. s] Witnesses: GEO. M. CRUIKsHANK, iF'l. Inst. Chartered Pdl. Agts.,62 Sl. Vim

cent Street, Glasgow.

JOHN ARMSTRONG, .Iunn, Clerk, 62 St. Vincent Street, Glasgow. 

